3-7 is a negative number and the answer is -4
Answer:
During photosynthesis a plant absorbs light energy using the pigment chlorophyll. This allows it to convert carbon dioxide and water into glucose. This glucose is:
transported to the growing parts of the plant for use in respiration
transformed into cellulose, proteins and oils
turned into starch for storage
Therefore, to test if a plant has been photosynthesising, you can test the leaf to see if starch is present.
The classification of the characteristics and examples based on the model of speciation that is being described are as follows:
- <u>Allopatric Speciation:</u> speciation that is based on geographic isolation.
- <u>Sympatric Speciation:</u> organisms are reproductively isolated by postzygotic mechanisms and evolve into different species.
- <u>Allopatric Speciation:</u> organisms in different locations are subject to different selective pressures and evolve into different species.
- <u>Sympatric Speciation:</u> speciation that does not require geographic isolation.
- <u>Sympatric Speciation:</u> bread wheat evolved from two species of wheat with different chromosome numbers.
<h3>What is speciation?</h3>
Speciation can be defined as an ecological and biological process through which new species of a living organism are formed, especially due to isolation of a part.
<h3>The types of speciation.</h3>
In Science, there are five (5) major types of speciation and these include the following:
- Allopatric Speciation
- Peripatric Speciation
- Parapatric Speciation
- Sympatric Speciation.
- Artificial Speciation.
Read more on allopatric speciation here: brainly.com/question/4493180
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<u>Complete Question:</u>
Classify the following characteristics and examples depending on what model of speciation is described.
Allopatric Speciation Sympatric Speciation
Speciation that is based on geographic isolation
Organisms are reproductively isolated by postzygotic mechanisms and evolve into different species
Organisms in different locations are subject to different selective pressures and evolve into different species
Speciation that does not require geographic isolation
Bread wheat evolved from two species of wheat with different chromosome numbers
Siltstone and sandstone are both granular materials but they are distinguished by grain size. The Wentworth scale places silt particles between 0.0039 to 0.0625 mm. This is smaller than very fine grained sand.
Siltstone and Sandstone may have identical mineralogy. They are generally comprised of quartz, feldspar and rock fragments. Because siltstone is comprised of smaller grains, it has smaller pore throats, resulting in lower permeability and higher capillary pressures than in an equivalent porosity sandstone.